Means for charging storage batteries



C.'E. OGDEN. MEANS FOR CHARGING STORAGE BATTERlES.

APPLICATION FILED JULY 26.1920.

, PatentedSept. 26, 1922.

14 TTOF/VEK 16 for the regulation of 25 the rate of char dama 40 prefera 50 lows, viz: From Patented Sept. 26, 1 922.

1,430,107 PATENT OFFICE.

CLARENCE E. OGDEN, 01' OTHCINNA'II, OHIO.

m5 1'03 CHARGING STORAGE BATTERIES.

Application iuea m 20,

To all whom it may concern:

Be it known that I, Crammer: E. 00mm, a citizen of the UnitedStates, and a resident of Cincinnatifin the county of Hamil- 5 tonand State'of Ohio, have invented certain new and useful Improvements in Means for Charging Stora Batteries, of which the followin is a'fu clear, and exact description, re erence being had to the accompanying' drawings, forming a part of this specification.

My invention relates to Ineai'is for the charging of storage batteries, and has particular reference to the revision of devices t e rate at which a battery is charged.

After discharge a stora battery of the lead type may be recharged at high rate until about 60% of the discharge has been returned, after which the charge should procoed at a lower rate in order to prevent ex cessive gassing and cons uent in'ury to the battery. The principal o ject o the present invention is to provide means whereby may be automaticalliy regulated bythe introduction of additional resistance when approximatel 60% of the discharge has been returned t ereby reducing the rate of charge and obviating the of charging at an excessive rate duragl e remainder of the period required I to recharge the battery.

' urther objects of the invention will appear ,from the 'following detailed descrip as tion thereof. i

In the drawings, the figure matic view of the invention.

The letters A and B indicate respectively two ampere hour meters, which may be,an'd v ly are, mounted together in a le case. The meter A is set so that the le travels approximately 40% slow on discharge an .Tcormct on-charge. Meter B is set to indicate correct on discharge andto is a diagramtravel 15% slow on-charge. The meters,

- suitab mounted, are in permanent connection with a. battery C on a vehicle and with acharf receptacleorsocketDalsoon the ve e, the-connections being as fol- 'tive charging circuit socket of receptac D by wire 1 to-meter A; thence 1) wire 2.to meter B; from meter B by wire 3 to battery C positive, and b wire 4 to the negative charging socket 66 o receptacle D. The needles of the respective meters are electrically connected by the negative line.

1aao.' Serial He. seems.

means of wires 5 to charging circuit posts in the respective meters. Each of the me ters is provided at zero with a contact point 6, the mpective points bein connected by wires 7 and 8 with individuafi sockets in receptacle D.

The letters E and F indicate respectively line switches preferabl mounted on a charging panel; the positive line 9 is connected with one pole of switch E. The brush 10 of switch E is arranged to make contact with a late 11, connected by a wire 12 with one po e of switch F. Brush 13 of switch F makes contact with a plate 14:, connected by a wire 15 through resistance '16 with the positive point 17 of plug G. The no tive point 18 of plug G is connected by wire 19 with the negative line 20. The positive line .9 is also connected by means of a wire 21 with resistance 22, and thence by wire 23 with wire .12.

The switches E and F are of the type generally known as shunt trip circuit breakers and, as diagrammatically illustrated in the drawings, are provided respectively with electromagnets 24 and 25 for releasing triggers 26 and permitting the opening of the respective switches by springs 27. ne ole of the coil 28 of magnet 244s connecte b wire 29 with a oint 30 on plug G, whic point is arranged of wire 7 of meter A. The other pole of coil 28 is connected by wire 31 with a point 32 arranged to make contact with a plate 33 mounted on the lever of switch E. The plate 33 also makes contact with po nt 34 which is connected b wires 35 and 36 with e plate 33 makes contactwith points 32 and- 34 when the brush 10 and plate 11 are in contact.

One le of coil 37 of ma et 25 is connected y wire 38" with a point 39 of -plug G the point 39 m r contact in the socket 0 wire 8 of meter .The other' pole of magnet 37 is'connected by wire 40 with a point 41 ed to. contact with a plate 42 on the lever of switch F, which plate also makes contact with point 43 connected b wires 35 and 36 with the negative line The plate 42 makes contact with points 41 and 43 when the brush 13 and plate 14 are in contact.

The 0 lows:

ration of the invention is as foldischarge of the battery C that needle ofmeter A has traveled 40 0 slow,

and lwm m i ndicates approximate y about i meter A,

60% only of the actual discharge. The needle of meter B on the other hand has traveled correctly on discharge and therefore stands at a point indicatin the actual discharge from the batter n rechargin the battery, the plug (I and receptace are connected in the usual manner, after which the switches E and F are closed. The charging circuit is then through positive line 9, switches E and F, resistance 16 wire 1, meter A, wire 2, meter B, wire 3, wires 4 and 19 to negative line 20. During charge the needle of meter A, travels at the correct rate to indicate the actual amount of charge The needle thus reaches zero when the battery is approximately 60% recharged only; at this sta the needle of meter B, traveling 15% s ow on charge is in position indicating approximately only of the required recharge \Vhen the needle of meter A reaches zero it contacts with point 6 of said meter and a shunt circuit is thus established from the line 9 as aforesaid through wires 1 and 5, needle of int 6, wire 7, point 30, wire 29, coil 28, wire 31, plate 33, wires 35,and 36 to negative line 20. The magnet 24 being thus energized by coil 28, trips the trigger 26 and allows the spring 27 to 0 )en switch E, both the line circuit through rush l0 and plate 11 and the shunt circuit through coil 28 and plate 33 being opened thereby.

Thereafter the char ing circuit is as follows: From line 9, tlrough wire 21, resistance 22, wire 23, wire 12, switch F. resistance 16, and so on as above set forth. The needle of meter-.13 traveling slow on charge, and having still approximately 50% of its total discharge to travel, requires approximately of charge in order to restore the actual remaining 40% of discharge I taken from the battery. Thus in order to bring the needle of meter B to zero an actual overcharge of approximately 15%, which is desirable in recharging a battery, in order.

to take care of wasta during the process, is required. When t e needle of meter B makes contact with int 6 of said meter, a shunt circuit is esta )lished through coil 37 of magnet 25 as follows: Through wire 1, meter A, wires 2 and 5, needle of meter B, point 6 of said meter, wire 8, point 39 of plug G, wire 38, coil'37, wire 40, plate 42, wires 35 and 36 to negative line 20. The energizing of magnet 25 trips the trigger 26 and opens the line circuit as well as shunt circuit through switch F, thus entirely disconnecting the current.

As will be seen by the arrangement of the meters A and B, together with the other devices and connections described, suitable means are provided whereby the rate of recharge is automatically controlled. and

battery C,

whereby, furthermore, a suitable overcharge is provided.- The operation of the several devices being entirely automatic and requiring no mechanical manipulation, is at all times certain and elfectire, thus eliminating all possibility and danger of injury to the battery during charge.

Havi thus full described my invention, what I c aim as new and desire to secure by Letters Patent, is:

L'Means for charging storage batteries comprising in combination with a charging circuit and resistance, two ampere hour meters, the first of said meters being set to indicate slow on discharge and correct on charge, means whereby during charge said first meter is arranged when at zero to introduce said resistance into the charging circuit, and means whereby the second meter is arranged on completion of charge to open the line circuit.

2. Means for charging storage batteries comprising in combination with a charging circuit and resistance. two ampere hour meters, the first of said meters being set to indicate slow on discharge and'correct on charge, and the second meter being set to indicate correct on discharge and slow on charge, means whereby during charge said first meter is arranged when at zero to introduce said resistance into the charging circuit, and means whereby the second meter is arranged at zero to open said charging circuit.

3. Means for charging storage batteries comprising in combination with a charging circuit, two automatic circuit breaking switches and mistance, two ampere hour meters, the first of said meters being set to indicate slow on-discharge and correct on charge, means whereby during charge said first meter is arranged when at zero to open said first switch to introduce said resistance into the charging circuit, and means whereby the second meter is arranged on completion of charge to open said second switch.

4. Means for charging storage batteries comprising in combination with a charging circuit, two automatic circuit breaking switches andresistance, two ampere hour meters, the first of said meters being set to indicate slow on discharge and correct on charge and the second meter bein set to indicate correct on discharge an slow on charge, means whereby during charge said first meter is arranged when at zero to open said first switch and introduce said resistance into the charging circuit, and means whereby the second meter is arranged at zero to open the second switch to open said charging circuit- CLARENCE E. OGDEN. 

